Horizontal sit-up exerciser



FIG. 1 is a top plan view of a horizontal sit-up exerciser showing our new design;

FIG. 2 is a side elevational view thereof, the side opposite being substantially a mirror image;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a rear elevational view thereof;

FIG. 5 is a top plan view of a modified form of the design shown in FIGS. 1 through 4;

FIG. 6 is a side elevational view thereof, the side opposite being substantially a mirror image;

FIG. 7 is a front elevational view thereof; and,

FIG. 8 is a rear elevational view thereof. 

The ornamental design for a horizontal sit-up exerciser, substantially as shown and described. 